Clay-grinding machine.



O. GOETZ. CLAYGRINDING MACHINE.

APPLICATION FILED APILZ, 1912.

1,051,216., Y Patented Jan.21,1913.

s l wen-$01 9 maria; 6065 Wibmmm 6 Hon e 1 cu'nuxm PLANOGHAPHCOHWASHINA'ITYDN, I) c.

FFICE.

CHARLES GOETZ, OF MOUNT SAVAGE, MARYLAND.

CLAY-GRINDING MACHINE.

To all whom it may concern.-

Be it known that I, CHARLES GOETZ, a citizen of the United States,residing at Mount Savage, in the county of Allegany and State ofMaryland, have invented new and useful Improvements in Clay-GrindingMachines, of which the following is a specification.

This invention relates to clay grinding machines, the main object of theinvention being to provide a simple form of conveyer by means of whichthe ground product may be discharged in a continuous stream from thepan, during the rotation of the latter, a further object of theinvention being to make said conveyer adjustable to regulate thedischarge of the product.

With the above and other objects in view, the invention consists in theconstruction, combination and arrangement of parts, as will behereinafter more fully described, illustrated in the accompanyingdrawings, and pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a front elevation of a clay grindingmachine, showing the invention applied thereto. Fig. 2 is a plan view ofa portion of the machine, showing the conveyor. Fig. 3 is a verticalcross section, showing the conveyor adjusting lever. Fig. 1 is a detailperspective view of the conveyor detached.

Referring to the drawings, 1 designates the frame of the machineprovided with the bearings 2 for the drive shaft 3 which carries thegrinding wheels 4: operating against the floor of the revolving pan 5,said pan being driven by a vertical shaft 6, the parts so far describedbeing of the usual arrangement.

In carrying out the present invention, the inner surface 7 of the sidewall or flange of the pan is made slightly convex or rounding in crosssection, as shown, and in connection with the floor and side wall of thepan, I employ a special form of discharging conveyer 8 made taperingfrom end to end, that is to say, narrowing from one end to the other.The narrow end is chamfered, as shown at 9, adapting it to rest againstthe floor of the pan. It will also be noted that in cross section, thedischarging conveyer is concavo-convex, and that it is provided on itsconcaved side with transverse riflles or corrugations 10, resembling sawteeth in cross section. The riifles extend spirally with relation to themajor axis of the con- Specifieation of Letters Patent.

Application filed. April 2, 1912.

Patented Jan. 21, 1913.

Serial No. 687,963.

veyer and form ledges, against which the material rests in its movementlengthwise of the conveyer, the depressions formed by said riflles alsoallowing air to pass under the ground product and thereby assisting inthe easy discharge of the same. It will also be noted, by reference toFig. 4-, that the conveyor as a whole is spirally distorted, so as topermit the inner end to scoop up the ground product, while the outerextremity thereof stands approximately in a vertical plane, thus formingan overhanging and laterally ejecting portionll which insures thedischarge of the ground product over the side of the pan, and freelytherefrom, the outer extremity of the conveyer extending above andprojecting beyond the outer periphery of the pan.

The conveyor is pivotally supported by means of a rock shaft 12 mountedin bearings 13 on parallel cross bars 14; connected to the main frame ofthe machine. Connected to the free end of the conveyer is a lift rod orlink 15, the upper end of which is pivotally connected to an elevatingand depressing lever 16 fulcrumed at 17 on the frame of the machine, andengaging a toothed rack 18, whereby said lever may be held at anyposition. This enables the conveyer to be sustained in an elevatedposition, during the mixing of the clay, and as soon as the mixingoperation has been completed, the beveled extremity of the conveyor maybe moved downwardly into contact with the bottom of the pan, for thepurpose hereinabove stated. The inner surface of the wall or rim of thepan is convex or rounded in order that the adjacent side edge of theconveyor may lie in close relation or actual contact therewiththroughout the said inner wall of the pan, thereby in suring thedischarge of all the material ground in the pan.

What is claimed is:

1. In a clay grinding machine, the combi' nation with a rotary pan and agrinding wheel cooperating therewith, of a discharging conveyerconsisting of a gutter-shaped body concavo-convex in cross section andarranged with the inner end resting on the floor of the pan and theouter end extending over the side of the pan and projecting beyond thesame.

2. In a clay grinding machine, the combination with a rotary pan and agrinding wheel cooperating therewith, of a discharging conveyerconsisting of a gutter-shaped body concavo-convex in cross section andspirally distorted from end to end and arranged with the inner endresting on the floor of the pan and the outer end extend ing over theside of the pan and projecting beyond the same.

3. In a'clay grinding machine, the combination with a rotary pan and agrinding Wheel cooperating therewith, of a discharging conveyorconsisting of a gutter-shaped body concavo-convex in cross section andarranged with the inner end resting on the floor of the pan and theouter end extending over the side of the pan and projecting beyond thesame, said conveyer being provided with transverse riflles.

4:. In a clay grinding machine, the combination with a rotary pan and agrinding wheel cooperating therewith, of a discharging conveyerconsisting of a gutter-shaped body concavo-convex in cross section andarranged with the inner end resting on the floor of the pan and theouter end extending over the side of the pan and projecting beyond thesame, said conveyer being provided with spiral riflles.

5. In a clay grinding machine, the combination with a rotary pan and agrinding wheel cooperating therewith, of a discharging conveyerconsisting of a gutter-shaped body concave-convex in cross section andarranged with the inner end resting on the floor of the pan and theouter end extending over the side of the pan and projecting beyond thesame, and means for adjusting the inner end of said conveyer up anddown.

6. In a clay grinding machine, a rotary pan, embodying an upstandingrim, the inner surface of which is convex, a discharging conveyerconsisting of a gutter shaped body concavo-convex in cross section andarranged with the inner end resting on the floor of the pan an dtheouter end extending over the side of the pan and projecting beyond thesame, the side edge of the conveyer lying in contiguous contact with theconvex side wall of the pan.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES GOETZ.

Witnesses v r C. J. BARRETT, LAWRENCE FANNON.

Copies of this patent may be obtained for five cents each, byvaddressing the Commissioner of Patents,

Washington, D. C.

